Home / 5,390.18-8,085.27-2,459.78

Finding the Fourth Proportional to 5,390.18, 8,085.27 and 2,459.78

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Solution

The fourth proportional to 5,390.18, 8,085.27 and 2,459.78 is: 3,689.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.18 : 8,085.27 = 2,459.78 : x
  2. Step 2: Convert to fraction form
    5,390.18/8,085.27 = 2,459.78/x
  3. Step 3: Cross multiply
    5,390.18x = 8,085.27 × 2,459.78
  4. Step 4: Simplify right side
    5,390.18x = 19,888,014.88
  5. Step 5: Solve for x
    x = 19,888,014.88/5,390.18
  6. Step 6: Final answer
    x = 3,689.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.